Titanium plates feature outstanding corrosion resistance,high specific strength and low density,making them core structural materials widely adopted in chemical industry,equipment manufacturing,medical treatment,aviation and other sectors.According to rolling temperature,titanium plates fall into two main categories:hot-rolled and cold-rolled titanium plates.They differ greatly in processing routes and product properties,and are applicable to distinct working conditions.
Hot-Rolled Titanium Plates:High-Temperature Forming for Mass Production of Thick Plates
Hot rolling is performed above the recrystallization temperature of titanium (800–1000°C).Titanium billets gain drastically improved plasticity at high temperatures with large single-pass reduction,enabling efficient rolling of ingot forgings into medium and thick plates.Dynamic recrystallization at high temperatures eliminates casting defects such as porosity and improves the plasticity and bending formability of finished plates.Nevertheless,an oxide scale forms on the surface,leading to loose dimensional tolerances and high surface roughness.It requires no high-precision finishing,delivers lower production costs and faster delivery cycles.
Hot-rolled titanium plates normally range from 3 mm to 100 mm in thickness,and are mainly used for pressure-bearing structural components.They are extensively applied in pressure vessels,heat exchanger tube sheets,seawater desalination facilities,ship structural parts,environmental desulfurization towers and other heavy industrial equipment.They are the preferred choice for equipment shells,supporting frames and other components requiring secondary cutting,welding and large-area assembly with no strict requirements on surface finish.
Cold-Rolled Titanium Plates:Room-Temperature Precision Rolling for Thin Plates with High Accuracy
Using hot-rolled titanium slabs as raw materials,cold rolling is conducted at ambient temperature through multiple precision rolling passes.Free of high-temperature oxidation,the plates boast bright and clean surfaces,thickness tolerances controlled at the micron level,as well as excellent flatness and dimensional consistency.Work hardening occurs during rolling to greatly raise tensile strength;intermediate vacuum annealing is adopted to release internal stress and balance strength and machinability.
Cold-rolled titanium plates are commonly 0.5–6 mm thick,and can be directly assembled without polishing.They serve high-end scenarios including medical implants,precision aviation components,anti-corrosion lining plates for electronics,thin heat exchange sheets for fine chemical industry and cladding layers of titanium composite plates.They are also suitable for precision sheet metal stamping and bending,instrument inner linings,electroplating anti-corrosion substrates and other parts with stringent standards for dimensional accuracy and surface quality.
Selection Summary
Hot-rolled titanium plates are designed for large-size thick plates and low-cost structural applications,while cold-rolled titanium plates excel at high-precision thin plates requiring fine machining.The combined process of hot rolling for breakdown plus cold rolling for finishing is widely used to meet the full-chain titanium material demands ranging from heavy industrial equipment to high-end precision manufacturing,and provides reliable material support for lightweight anti-corrosion equipment across various industries.
